Question 843245
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Hi,
Let t represent the time traveled at 42mph
D = D = rate•time
{{{(42mph)t = (48mph)(t-.5hr))}}}
{{{(42mph)t = (48mph)(t)-24m))}}}
      24m = 6mph(t)
        4hr = t

 How far apart are the towns? {{{(42mph)4hr}}} = 168mi apart